Monitor temperature and humidity with Adafruit IO

How it works

The tool measures temperature and humidity every 2 hours by default (the time between each measurement can be modified in the config.h file).

The data is stored on an Adafruit IO feed to be visualized in a dashboard.

Between each measurement, the ESP goes into deep sleep mode.

Connect the DHT sensor

Create Adafruit IO Dashboard

• See this link for create a feed:

https://learn.adafruit.com/adafruit-io-basics-feeds/creating-a-feed

• See this link for create a feed: (create a feed for temperature and another for humidity)

https://learn.adafruit.com/adafruit-io-basics-dashboards/creating-a-dashboard

• Get your Adafruit Key:

Click on the tab "My Key"

• Get your Adafruit feed key:

Go to the feeds page to see the key of your feed

Setup

• First copy the template:

cp config_template.h config.h

• Configure the following variables with your credentials

/* WIFI Setting */
#define WIFI_SSID "YOUR_WIFI_SSID"     /* Replace with your wifi ssid. */
#define WIFI_PWD "YOUR_WIFI_PASSWORD"  /* Replace with your wifi password */
/* Adafruit IO settings */
#define IO_USERNAME "YOUR ADAFRUIT USERNAME" /* Replace with your adafruit username. */
#define IO_KEY "YOUR ADAFRUIT KEY"           /* Replace with your adafruit key.      */
#define IO_FEED_HUMIDITY "HUMIDITY FEED NAME"    /* Replace with your adafruit humidity feed name. */
#define IO_FEED_TEMP "TEMPERATURE FEED NAME"     /* Replace with your adafruit humidity feed name. */

Built with

• ESP32 NodeMCU Module WLAN WiFi Development Board with CP2102
• Sensor DHT22